bevilacqua



Jan. 21, 1931.

G. BEVILACQLQA NONTAMPERLNG SAFETY ENVELPE Filed May 1/ 1929 2 Sheets-Sheet l INVENTOR.

ATTORNEYS Jan. 27, 1931.

G. BEVILACQUA NONTAMPERING SAFETY ENVELOPE Filed May 1. 1929 2 Sheets-Sheet 2 .YIII/ iIE: Ill/l/IIIII III J 6 e/Zacgu.

' W w ATTORNEY? Patented Jan. 27, 1931 U .2 i I v STATES emsnrrnnnvrnecque, on NEW YORK-1N. .Y.. oNTA MrEnING sum? ENVELOPE o v I Application filed m 1,-199; serial Re. 359,683; I

useful improvements'in safety envelopeand line*6%6 (if Figure 2;" I V has for itsp'rimaryobject to'providea'n en'- 'Figure 7isacross-sectional viewtakeiron velopeconstruction'that isclosed and sealed 'line 7+4? of Figure 3; I 5 I in a manner to prevent'unauthorized opening FigureBjis a fcflbs's-sectionalview taken 611 thereof or tamperingwiththesame without line 8 8 ofFigure; 1 1 1 I I giving an indication of a surreptitious 'ef- Fi 'gure l9is a cross-section'alviewtaken on fort to gain access to the contents ofthe enlime-9 f Figure .1 L I I ve'lope/ i I u f -Figure '10fis a-developedplan-view of the 10 A further object ofthe, invention is to procardboard insert for the envelope with which 605 vide a safety'envelopein which an envelope the locking tongue is associated; and v formed fromfa blank providedwith side fi ure-11 is a planview-ofthe'cardboard I and end flaps and constructed of the usual I filler'in fold'ed position ready for insertionin envelope papers has a stiffening element the envelope; 1 f

This invention relates to certain new and Figure 6 is a'cros's-sect ional view'taliel'i[on within the folded'envelope for cooperation 'As shown more clearly: in Figure the en 0 with a locking tongue on the closure flap velopefis formed from-a blankcomprising'a to prevent opening'of the flap and'the re rectangular front'wall'l'carrying side flaps 2 moval or displacement 'ofthe locking tongue and 3 movableupon the lines 4 and 5 respec-if' without giving an indication that someone I t1vely a bottom flap'fi foldable upon the line has tampered with the envelope in attempt '7 an'dja top'orclosure flap'S foldable upon the ing toopenthesameff I l1ne 9Q; v I I With the v bove and other objects in view Theenvelope blank is formed of the usual that willbecome apparent as the nature of envelope paper and base-comparatively thin the invention'is better understood, the same cardboardffiller placed therein anddesigned 25 consists" in'the' novelfo'rin; combinationend for interlocking engagement with alocking 5 arrangement of parts hereinafterimore fully tongue on the closure flap 8, the filler shownin described, shown inthe accompanying'draw- Flgures'lO and 11 comprising the sections 10 ings and claimed. and 11 angularly cut at opposite sideedges Injthe drawings thereof as at 12 foldable upon'theline 13'to 3095 Figure lis a developed plan view of the ,the' position shown in Figure 11 forming blank from which the envelope is formed 4 lower corner tabs 14, the upper folded edge showing the rthree section's of the locking of. the section 11 of the filler terminating b etongu f A j 'lo'w the upper edge of'the section V I Figure 1a is a perspective view of thecardshaped notches 15 extend nto the section 11 board re-inforcing insert for the locking 'of the upper folded edge thereof as shown tongue o h efivelopep I f 7 1n Figurellto provide a central tab 16f0r Figure lb is a plan View ofthe fringed P p r ea l to pp r- Si e h capfor'the outer end of the envelope tongue; 17 are f m d 11113119 upp 9 10 p t I s Figure 2 is a plan view, similiar to Figure g gz ig zgnggig g q f fig I 1 i one i g fi gfi filler is placed'in the envelope withthe secengage W1 1 e enve ope W1 tion 10 adjacentthe front side 1 of the enwhigh the lopking l is flsspcia'ted; velope and with the cross-strip 19 adiacent Elgure 31s a plan i slmllar 9 lgure the fold line 9 for the closure flap 8. 45 ,2 with the bottom flap 1n foldedposition The Side b 2 of the l p is provided I F g 4 1S a Pl W7 slmllar F with a centrally disposed horizontal slot 20 3 Wlth the Othelf slde flap 1n folded p n 3 spaced below the upper edge of the slot so Figure 5 is a plan view of theenvelope, that 'whenthe flap is folded ontothe front similar to Figure 4 with the upper or closure side 1, the slot will'be centrally disposedbev flap and locking tongue in folded position; tween the fold lines-Land 5. Another slot-21. 0

is formed in the flap 2 above the slot 20 with theupper inner wall thereof cut away at 22 and opening at the upper edge of the flap providing side tongues 23. With the filler in position upon the front wall 1 of the envelope, the side flap 2 is folded on the line 4 and the neck 180f the filler is positioned in theslot 21 of the flap 2 with the tongues 23 positioned I beneath the cross strip 19 as shown in Figure 2, the upper end of the tab 16 of the filler being disposed adjacent the 'lowerledge of the slot 20 as illustrated. The flap 2- is of an area substantially equal to the front wall "1 of the envelope and is guinlned at its outer edge as at 24 to be adhesivelysecured to the adjacentportion of the front wall '1.

I The lower flap 6 is cutaway at, one, end as at 25 for the saving of material and design purposes, while the lower edgeis cut. away as at 26 providing a clearance for the cross strip 19 of the filler when theflap 6 isfolded, -the flap being provided with a slot 27 registering with the slot 20 in the'fiap 2 while. the. edges of-the flap 6 are gummed as at 28,v for adhe- 251 I flap 2.

si ve attachment to the adjacent face of the The side flap 3'l1'asitslower edge cutaway as at 29 and the upper edge cutaway at 30 providing'a clearance for the cross strip. 19 of the fillerand' is; further provided with a slot 31 adaptedto. register with the slots 20-,

and 27 of the flaps 2-and 6 respectively. The edgero-f theiiap 3. being gummed as at 32. Thenthe side and bottom. flaps are folded and sealed,- the cross strip 19.of the. filler is exposed as shown in Figure 4 and if desired, the name of. the. addressee may be; written upon the cross strip. I I I A locking tongue 33=-shownin cl n1- oletedv form; in Figures2 to 4- is' carried by'the clo- .ShQ-vVlT in. Figure 1b with opposite ends-there of. serrated as-at 39, the. cap straddling the folded. tonguesections 34. and 35 and secured thereon by the; pin fastening 401 The lower edges: of the side'tongue sections 35' are 'simie larlyserrated as at 4:1jto provide a fringe edge for purposesnow to appear. The free edge of the closure flap 8 is gummed-,as at42' for adhesive attachment to the adjacent portions of the underlyingflaps 2, 3 and 6 asshown in "r-F-igurefi. The closurelflap 8 is folded on the line 9 and the reinforcedstiifenedi tongue is inserted. through the registering slots 20, 27 and-31 tobeguidedby the tab 16- of the filler for'pa-ssage between the tab 1'6:and section 1'0 of the filler... The envelope filler is providedwith a $101; 13a on the fold line 13 directly beneath the tab 16 and through which slot 13a the end of the tongue 33 is projected, the serrated or fringed ends 39 of the cap .37 passing through the-slot 13m and spreading to prevent withdrawal of the tongue. The serrated or fringed ends 41 of the tongue section I 35 pass through and engage the upper edges of the flap slots 20, 27' and 31 so that the tongue is doubly retained in assembled positionto prevent unauthorized withdrawal t e I i From the above detailed description of the invention, it is believed that the construction and operation'thereof will at once be apparent and while there is herein shown. and described;v the preferred embodiment of the present inventiomit' is nevertheless to taun derstood that mi nor changes may be made therein without I scope of the invention as claimed.

I- claim departing from the spirit A safety'e'nvelope comprising. an en,-

velope body including a sealing flap, a stiffening fillerin the body and a stiffened lockin-gtongue on the sealingflap'inserted in. the

body andengaged with the filler, thebody saidi filler having a slotted opening therein,

said tongue being flanged at. each .end and.

Y further including side and bottom lflaps and I I thereloeing slots-in the side: andbottomfiaps for insertion of the. tongue. into the body,

presenting fringed edges. at opposite faces, I

thereof for'cooperation withthewa-lls of the filler slot and flap slots respectively, "the stiifenedlocking.tongue comprising. a central sectionand-side sections foldable there'- 2. A safety envelope. comprising, an envelope body including a. sealing flap, a stiflening filler inthebody anda stiffened looking.

over and a cardboard filler for. the tongue. I

tong-neon thesealing inserted in the body and interlockingly engaged with the filler,

thebody further including side and bottom flaps and-there being slots in theside and bottom-flaps for. i-nsertion offthe tongue into the body, said filler ha-Vinga slotted opening,

there-in, said tongue being flanged at each end and presenting fringed I edges at opposite facesthereof for cooperation; with the walls of the filler slot and flap slots respectively, I

the stiffened locking tongue comprising a central section and side sections foldable I thereover and a cardboard filler for the tongue. 7 l

3. A safety envelope comp rising an envelope body including a sealing flap, a stifienmg filler in thebody and a stiffened locking tongue on thesealingfiap inserted in thebody and engaged with the filler, the body'further lncl'uding side and bottom flaps and there being slots in the side a'ndbottorn flaps for insertion ofthe tongue into the body, said filler having a slotted opening therein, acap on the'tongue and said cap and inner end of,v

the tongue being flanged for cooperation with the walls of the filler slot and flapslots re- 7 spectively, the stiffened locking tongue comprising a central section and side sections into the body, said filler having a slottedv opening therein and a cap on the tongue and said cap and inner end of the tongue being flanged for cooperation with the walls of the filler slot and flap slots respectively, the stifiened locking tongue comprising a central section and side sections foldab-le thereover and a cardboard filler for the tongue, and the flanged cap comprising a strip of 1 paper serrated at its ends and inclosing the outer end of the tongue with the serrated ends ex anded outwardly.

n'testimony whereof I aflix my signature.

GIUSEPPE BEVILACQUA. 

